diff -r 000000000000 -r 6474c204b198 js/src/tests/js1_8_5/regress/regress-469758.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/js1_8_5/regress/regress-469758.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,14 @@
+// Any copyright is dedicated to the Public Domain.
+// http://creativecommons.org/licenses/publicdomain/
+
+var err;
+try {
+    {let i=1}
+    {let j=1; [][j][2]}
+} catch (e) {
+    err = e;
+}
+assertEq(err instanceof TypeError, true);
+assertEq(err.message, "[][j] is undefined");
+
+reportCompare(0, 0, 'ok');